Analysis

The big announcement from LafargeHolcim this week was the launch of its Industry 4.0 plan known as ‘Plants of Tomorrow.’ The scheme hopes to use automation technologies and robotics, artificial intelligence, predictive maintenance and digital twin technologies across the company’s entire production process. Operational efficiency gains of 15 - 20% are promised.

There wasn’t much detail beyond the use of the Siggenthal integrated cement plant in Switzerland as the ‘lighthouse’ of the scheme, where around 30 proof-of-concept technology ideas will be tested. One technology it did flesh out a little was its long-running Technical Information System (TIS). This follows the work between Holcim and the power and automation product supplier ABB. LafargeHolcim says that over 80% of its plants around the world use the TIS to provide data transparency at plant, country, regional and global level. It added that some country operations have more than a decade of historic technical data available. This last point is pertinent as the data could potentially be used to support the training of any machine learning algorithms the company might want to invest in. The building materials company also mentioned its LH Maqer subsidiary. This startup incubator was launched at the end of 2018.

LafargeHolcim appears to be playing catch up here with Cemex, which has steadily been promoting its own Industry 4.0 developments in recent years. Emphasis on ‘promotion’ here as only yesterday, the day LafargeHolcim made its big reveal, Cemex happened to release information about a recent roundtable in France that it participated in on digitisation and productivity in the construction sector.

Notably in March 2019, the Mexican multinational struck a deal with Petuum to implement its Industrial AI Autopilot software products for autonomous cement plant operations at its plants around the world in March 2019. Readers can find out more about Petuum’s work with Cemex in the June 2019 issue of Global Cement Magazine. In late 2017 Cemex too set up a division, Cemex Ventures, to engage with startups, universities and other organisations. Cemex has also been building its digital customer integration platform Cemex Go since around the same time.

One interpretation of Industry 4.0 is as a German-industrial approach to the so-called fourth or digital revolution pushed by Anglophone software companies. The idea of taking as much data from a production process, such as making cement, is enticing but the prospect of actually doing something useful with this tsunami of information is daunting. Typically algorithm techniques or predictive maintenance seem so far to focus on discrete parts of a process such as a finish grinding mill or final product logistics networks. Companies like Germany’s Inform focus on the latter for example and, incidentally, it celebrated its 50th anniversary this week.

If automated systems start making apparently nonsensical yet useful decisions across the whole raw materials, production and supply chains, then Industry 4.0 will reach its full potential. This moment, if it comes, will be analogous to the time IBM’s computer Deep Blue managed to beat chess grandmaster Garry Kasparov in the late 1990s. What’s more likely are automated systems that can perform consistently outside the human operator comfort zone edging up against hard physical process constraints.

Meanwhile, what will be interesting to watch here is whether LafargeHolcim will be able to leverage any advantage over Cemex by having more cement plants to pull data from. Before LafargeHolcim started selling off its south-east Asian subsidiaries it had more than three times as many cement plants as Cemex. If data really is more valuable than oil these days then starting late in the industrial digital arms race may not be as deleterious as one might first think.

Charah Solutions has been steadily building up its fly ash distribution business in recent years with an eye on the supplementary cementitious materials (SCM) market. This week it opened the third of its new series of SCM grinding plants, at Oxnard in California, US. The unit sticks out because it is focusing on grinding natural pozzolans. The plant will receive natural pozzolan by truck and rail and then use Charah’s patented grinding technology to produce pozzolan marketed under its MultiPozz brand. The previous plants in this series mentioned natural pozzolans but this is the first to promote it explicitly.

The change is potentially telling because global demand for granulated blast furnace slag (GBFS) outstrips supply. Both performance benefits and environmental regulations are pushing this. It’s a similar situation for fly ash, also driven by trends to close coal-fired power stations in some countries. As Charles Zeynel of SCM trading firm ZAG International explained in the March 2019 issue of Global Cement Magazine, “...volcanic pozzolans are a potential SCM of the future. This is gaining traction, but it’s slow progress at the moment. This will be the answer for some users in some locations.”

The problem though is that natural pozzolans are down the list of preferred SCMs for their chemical properties after silica fume, GBFS and fly ash. The first is expensive but the latter two were traditionally cheap and easy to obtain if a cement or concrete producer had access to a source or a distribution network. Natural pozzolans are very much subject to variations in availability.

It’s no surprise then that Charah is promoting natural pozzolans in a Californian plant given that state’s environmental stance. It’s unclear where Charah is sourcing their pozzolan from but they are not the only company thinking about this in the US. Sunrise Resources, for example, is working on the environmental permits for a natural pozzolan mine near Tonopah in Nevada. As it described in its company presentation, California and Nevada are the most affected states in the fly ash supply crisis because they are, “...at the end of the line when it comes to rail deliveries from power stations in central and eastern USA.” It also estimated that California used 0.9Mt of pozzolan in its cement production of which about 90% is fly ash. The state produced 9.6Mt in 2015. Other companies are also mining and distributing natural pozzolans in the US as the website for the National Pozzolan Association (NPA) lists. Although, if this line-up is comprehensive, then the field is still fairly select. Most of these companies are based in the west of the country.

One last thing to consider is that various groups are tackling a potential future lack of SCMs for the cement industry by making their own pozzolanic materials through the use of calcined clay. These groups include the Swiss-government backed LC3 project and Cementir’s Futurecem products. Using clay should bypass the supply issues with natural pozzolans but the cost of calcining it requires at the very least an investment to get started.

As concrete enthusiasts often point out, a variant of pozzolanic concrete was used by the Romans to build many of their iconic structures, some of which survive to the present day. To give the last word to the NPA, “What is old is new again: natural pozzolan is back!” If environmental trends continue and steel and coal plants continue to be shut then it might just be right.

The Malaysian Competition Commission took the rather ominous step this week of saying it was taking extra care to watch the cement industry. Ouch! It said that had taken note of recent price rises by both cement and concrete producers and that it was working with the Ministry of Domestic Trade and Consumer Affairs as it met with the sector. It also said it was well aware of the recent merger between YTL and Lafarge, “...which had led to the market being more concentrated at the upstream and downstream level.”

The background here is that at least one unnamed cement producer announced a price hike of 40% in mid-June 2019. End-users panicked and the local press took up the story. The Cement and Concrete Association of Malaysia then defended price rises in general, when it was asked for comment, due to all sorts of mounting input costs. Although, to be fair, to the association the Malaysian Competition Commission acknowledged the price pressures the industry was under due to input costs in a report it issued in 2017.

Back in the present, the government became involved and Saifuddin Nasution Ismai, the head of the Domestic Trade and Consumer Affairs Ministry, calmed the situation down by saying that producers had agreed not to raise their prices after all and that any future planned price adjustments would be ‘discussed’ with the authorities first. Finance Minister Lim Guan Eng then followed this up with calls for an investigation into prices in Sarawak state in Eastern Malaysia. In response, Suhadi Sulaiman, the chief executive officer (CEO) of CMS Cement, batted this straight back by blaming industry mergers in Peninsular Malaysia and saying the company had no plans ‘anytime soon’ to raise its prices.

As the Malaysian Competition Commission kindly pointed out, this entire furore took place about a month on from the competition of LafargeHolcim’s divestment of its local subsidiary to YTL. The commission agreed to the acquisition of Lafarge Malaysia by YTL knowing that it was giving YTL ownership of over half of the country’s production capacity. With this in mind it is unsurprising that the commission might have wanted to look tough in the face of even a whiff of market impropriety, whether it was real or not.

The problem, as the Malaysian Competition Commission alluded to in its statement, is that the local industry suffers from production overcapacity. On top of this local demand has been contracting since 2015. The country has 11 integrated cement plants with a production capacity of 27.1Mt/yr, according to Global Cement Directory 2019 data. Production hit a high of 24.7Mt in 2015 and then fell year-on-year to 18.8Mt in 2017. Data from the Cement and Concrete Association of Malaysia painted a worse picture taking into account both integrated and grinding capacity reporting an estimated production capacity utilisation rate of just 59% in 2016. Lafarge Malaysia reported a loss before tax of US$97.7m at the end of 2018 as well as declining revenue. Shortly thereafter it announced it was leaving the country, as well as neighbouring Singapore.

In theory the buyout by YTL should have been one step closer to solving Malaysia’s overcapacity woes as either it gained synergies through merging the companies or shut down some of its plants. Certainly, the system appears to be working at some level, as the proposed 40% price rise hasn’t happened. Yet, if the government is reacting to voters rather than the market it could prolong the capacity-demand gap indefinitely. Under these conditions LafargeHolcim’s decision to exit South-East Asia may prove prescient.

Tourah Cement in Egypt took the tough decision last week to temporarily stop production. It blamed this on an acute financial crisis rendering it unable to pay its running costs. The subsidiary of Germany’s HeidelbergCement was reported in the Global Cement Directory 2019 as already being partly closed. This latest news is regrettable but not surprising.

Graph 1: Cement consumption and production in Egypt. Sources: Industrial Development Agency, Global Cement Directory 2019, Cement division of the Building Materials Chamber of the Federation of Egyptian Industries.

As Graph 1 shows that the backdrop here is of a local cement sector rife with overcapacity. Capacity utilisation rates have hovered around 70% in recent years. The sector breaks down into about a quarter of production capacity under state control and the remainder owned by private companies. Overall, about half of the production capacity is run by multinational companies like Greece’s Titan, France’s Vicat and Germany’s HeidelbergCement.

The country hosts some of the largest cement plants in the world as well as several very big plants by European or North American standards anyway. The whopping 13Mt/yr government/army-run El-Arish Cement plant at Beni Suef opened fully in 2018. It seemed likely that there were going to be losers in the industry following that kind of disruption from a state-owned player. Indeed, Medhat Istvanos, head of the cement division of the Building Materials Chamber of the Federation of Egyptian Industries, explicitly blamed the El-Arish Cement plant for making the situation worse in September 2018. He said that the decision to build the plant was ‘not based on precise information’ and that it had harmed local production.

In the wider picture, the cement sector started to move away from subsidised natural gas and heavy fuel oil to coal instead in the mid-2010s. Tourah Cement mentioned this in its statement about halting production. The government has supported the cement industry through large-scale infrastructure projects and a state-sponsored compensation system under the Contractors Compensation Act that offset the loss prompted by the Egyptian pound’s floatation in 2017.

However, overcapacity has consistently been a problem and this was clear when the El-Arish Cement plant was approved. Exports of cement crept up to 1Mt/yr in 2017 from 0.1Mt/yr in 2015. Yet, as the Low-Carbon Roadmap for the Egyptian Cement Industry pointed out, Egyptian FOB exports of cement cost US$20/t higher than regional competitors such as Turkey. At this kind of disadvantage Egypt lacks the traditional escape route for an overproducing cement sector.

In these kinds of conditions, consolidation appears to be crucial while organic or government-backed demand plays catch-up with the production base. Certainly Egypt has the population and the development potential as its economy grows in the medium to long term. The government stabilising the economy after recent troubles is crucial for the construction industry. In the meantime all is not lost as the focus is on efficiency gains and cost cutting. The growth of alternative fuels as the sector’s fuel mix continues to adjust to the new normal following the abolition of subsidies on natural gas is one example of this.

There was a glimmer of good news visible through the Delhi smog this week with the launch of a market-based emissions trading scheme (ETS) for particulate matter (PM). A pilot has started at Surat in Gujarat. The scheme will apply to 350 industries in the locality and it will be scrutinised for wider rollout in the country.

China robustly started to tackle its industrial PM emitters a few years ago although the work remains on-going. In its wake India has increasingly made the wrong sort of headlines with horrifically high dust emissions. Delhi, for example, reportedly had PM2.5 emissions of over 440µg/m³ in January 2019. To give this some context, the World Health Organisation’s (WHO) annual upper guideline figure for safe human exposure is 10µg/m³. Research by the Financial Times newspaper suggested that more than 40% of the Indian population is subject to annual PM2.5 emissions of over 50µg/m³.

Air Quality Life Index (AQLI) research reckons that if India were able to meet its national PM2.5 standard of 40µg/m³ then its population would live 1.8 years longer or 4.3 years longer if it met the WHO guideline level. The current situation is an unnecessary tragedy. In strictly structural terms the country’s productivity is being thrown away by damaging the health of its workforce. For comparison amongst other major cement producing countries, AQLI data placed China’s PM2.5 emissions at 39µg/m³, Indonesia at 22µg/m³, Vietnam at 20µg/m³ the US at 9µg/m³. These figures cover all industries in different conditions and climates. If the US can do it, why not the others?

Back on trading schemes, the famous ETS at the moment is the European one for CO₂ emissions. Similar schemes are slowly appearing around the world as governments look at what the European Union (EU) did right and wrong. For example, South Africa started up a carbon tax in early June 2019. Yet as the supporting documents by the Gujarat Pollution Control Board (GPCB) point out there have been a variety of ETS systems’ over the years. The US’s Acid Rain Program is generally seen to have achieved significant reductions in SO2 and NOx emissions although the National Emission Standards for Hazardous Air Pollutants (NESHAP) has continued this work. Chile even ran its own PM ETS in the 1990s although the outcomes have been disputed.

One problem with a CO₂ ETS, and anthropomorphic or man-made climate change in general, is that it is intangible. Even if sea levels deluge major coastal cities, rising mean temperatures reduce agricultural yields and human populations contract sharply, people will still be arguing over the research and the causes. The beauty of a PM ETS is that if it works you can literally see and feel the results. A famous example here is the UK’s Clean Air Act in the 1950s that banished the fog/smog that London used to be famous for.

The Gujarat PM ETS is a pilot, the results of which will be considered by researchers from a number of US-based universities and the Abdul Latif Jameel Poverty Action Lab. Explicitly, the study plans to use a randomised control trial to compares its results against the command and control style approach used in the rest of the country. On the cement-side various Indian news stories have emerged as state pollution boards have increasingly started fining producers for emission limit breaches. Clearly the government is taking dust emissions seriously. Reduction is long overdue.